<para>Distance, azimuth and projection are all aspects of the same operation, describing (or in the case of projection, constructing) the relationship between two points on the world.</para>
<para>The azimuth is sometimes called the heading or the bearing in navigation. It is measured relative to true north (azimuth zero). East is azimuth 90 (<varname>pi/2</varname>), south is azimuth 180 (<varname>pi</varname>), west is azimuth 270 (<varname>pi*1.5</varname>).</para>
<para>The distance is given in meters.</para>
+
+ <para>Availability: 2.0.0</para>
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